THE USE OF LAYERED DOUBLE HYDROXIDES AS FIRE RETARDANTS:WHAT DO WE KNOW AND WHAT DO WE NEED TO KNOW?

摘要

Over the past several years, a great deal of information has been developed on the use of montmorillonite in polymer/clay nanocomposites and its effect on fire retardancy. For instance, we know that good nano-dispersion is necessary to achieve a reduction in the peak heat release rate and we know that the reason for the effectiveness of the nanoclays is due to the nanoconfinement of the degrading radicals by the clay platelets. From the nanocomposite point of view, we know that it is necessary to have an organic modification on the clay which contains at least one long tail, and two are necessary in some circumstances, to obtain good nano-dispersion.